CN105414426B - A kind of hot-swage method of kirsite small specification tube or bar - Google Patents
A kind of hot-swage method of kirsite small specification tube or bar Download PDFInfo
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- CN105414426B CN105414426B CN201510923197.0A CN201510923197A CN105414426B CN 105414426 B CN105414426 B CN 105414426B CN 201510923197 A CN201510923197 A CN 201510923197A CN 105414426 B CN105414426 B CN 105414426B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J3/00—Lubricating during forging or pressing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/165—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon of zinc or cadmium or alloys based thereon
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Abstract
The invention discloses a kind of kirsite small specification tube or the hot-swage method of bar, the method includes：Multi-pass hot-swage is carried out under conditions of being 150 DEG C~250 DEG C in temperature by kirsite pipe or kirsite bar stock, kirsite tubing or the diameter no more than Zinc alloy bar of 6mm of external diameter no more than 6mm are obtained accordingly；Intermediate annealing process are carried out to kirsite pipe or kirsite bar stock during hot-swage, it is 50%~70% to control the total deformation before first time intermediate annealing process, and the total deformation between adjacent intermediate annealing process twice is 50%~70%.The present invention prepares kirsite small specification tube/bar using hot-swage method, larger compressive strain can be produced using kirsite under hot-working, the machining deformation amount of single pass is improved, crystal grain thinning is realized, is made second to be mutually uniformly distributed, so as to lift the mechanical property of kirsite small specification tube/bar.
Description
Technical field
The invention belongs to small dimension non-ferrous metal tube, the forming processing technology field of bar, and in particular to a kind of zinc is closed
The hot-swage method of golden small specification tube or bar.
Background technology
High performance small dimension kirsite pipe, bar are preferable degradable medical metal materials, with good market
Application prospect.However, kirsite is Patterns for Close-Packed Hexagonal Crystal structure, temperature-room type plasticity deformability is poor, and high temperature deformation easily occurs brilliant again
Grain length is big and hot tearing, and plastic deformation temperatures interval is narrow.Common production small dimension metal tube, the method for bar have rolling, drawing
And extruding.However, rolling it is difficult with is difficult control when hot-working causes limited pass deformation, various manufacturing procedure and small dimension
Deflection processed；Tension stress during drawing, single pass heavy deformation is often less than 20% and is also easy to produce defect；Extruding is typically as system
For small dimension kirsite pipe, the process of bar stock material, such as existing continuous casting and extrusion (A of CN 102814478) and to cast zinc
The processing method that alloy carries out continuously extruded (A of CN 101698205) is difficult to prepare the small rule of external diameter or below diameter 6mm
Lattice kirsite pipe, bar.
The content of the invention
The technical problems to be solved by the invention are for above-mentioned the deficiencies in the prior art, there is provided a kind of small rule of kirsite
The hot-swage method of lattice tubing or bar.The method can produce larger compressive strain using kirsite under hot-working, improve single track
Secondary machining deformation amount, realizes crystal grain thinning, makes second to be mutually uniformly distributed, so as to lift kirsite small specification tube/bar
Mechanical property；Kirsite small specification tube/the bar prepared using the method, tensile strength, yield strength and elongation are warmmer
16%~30%, 21%~33% and 10%~21% is improved before swaging respectively.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of kirsite small specification tube or bar
Hot-swage method, it is characterised in that the method includes：It is 150 DEG C~250 in temperature by kirsite pipe or kirsite bar stock
Multi-pass hot-swage is carried out under conditions of DEG C, the kirsite tubing or diameter no more than 6mm of external diameter no more than 6mm are obtained accordingly
Zinc alloy bar；Intermediate annealing process are carried out during hot-swage to kirsite pipe or kirsite bar stock, control is for the first time
Total deformation before intermediate annealing process is 50%~70%, and the total deformation between adjacent intermediate annealing process twice is 50%
~70%；The pass deformation of the hot-swage is 10%~40%, and total deformation is not less than 70%；The kirsite pipe
The diameter of external diameter and kirsite bar stock is no more than 25mm.
A kind of above-mentioned kirsite small specification tube or the hot-swage method of bar, it is characterised in that intermediate annealing process
Oil removal treatment is carried out to kirsite pipe after preceding a time hot-swage, kirsite pipe is removed after remaining passage hot-swage
Oil processing and pickling processes；Directly kirsite bar stock is carried out at intermediate annealing after a time hot-swage before intermediate annealing process
Reason, mechanical grinding is carried out after remaining passage hot-swage to kirsite bar stock.
A kind of above-mentioned kirsite small specification tube or the hot-swage method of bar, it is characterised in that the intermediate annealing
Pickling removal surface scale is carried out after treatment to the kirsite pipe through intermediate annealing process, it is right after the intermediate annealing process
Polishing removal surface scale is carried out through the kirsite bar stock of intermediate annealing process.
A kind of above-mentioned kirsite small specification tube or the hot-swage method of bar, it is characterised in that the intermediate annealing
The temperature for the treatment of is 150 DEG C~300 DEG C, and soaking time is 30min~60min.
A kind of above-mentioned kirsite small specification tube or the hot-swage method of bar, it is characterised in that when the kirsite
During a diameter of 10mm~25mm of the external diameter of pipe or kirsite bar stock, the pass deformation of hot-swage is 10%~40%, and
Pass deformation is gradually reduced, and the diameter of the kirsite bar stock after the external diameter of kirsite pipe after hot-swage or hot-swage is small
When 10mm, it is 10%~30% to control the pass deformation of hot-swage, and pass deformation is gradually reduced.
A kind of above-mentioned kirsite small specification tube or the hot-swage method of bar, it is characterised in that when the kirsite
When the external diameter of pipe or the diameter of kirsite bar stock are less than 10mm, the pass deformation of hot-swage is 10%~30%, and passage
Deflection is gradually reduced.
A kind of above-mentioned kirsite small specification tube or the hot-swage method of bar, it is characterised in that during hot-swage
Control to swage the head speed of mainshaft for 200r/min~300r/min.
A kind of above-mentioned kirsite small specification tube or the hot-swage method of bar, it is characterised in that the hot-swage
Feeding speed is 3mm/s~20mm/s.
A kind of above-mentioned kirsite small specification tube or the hot-swage method of bar, it is characterised in that the kirsite pipe
Before base hot-swage, on core bar uniform application by graphite powder and butter according to 1:The lubricant of the mass ratio mixing of (6~10).
The present invention has advantages below compared with prior art：
1st, the present invention prepares kirsite small specification tube/bar using hot-swage method, can be produced using kirsite under hot-working
The larger compressive strain of life, improves the machining deformation amount of single pass, realizes crystal grain thinning, makes second to be mutually uniformly distributed, so as to be lifted
The mechanical property of kirsite small specification tube/bar.
2nd, the kirsite small specification tube/bar prepared using the method for the present invention, tensile strength, yield strength and elongation
Rate compared with improving 16%~30%, 21%~33% and 10%~21% respectively before hot-swage.
3rd, the method for the present invention is applied to the preparation of kirsite pipe wire rod, and especially external diameter/diameter is not more than 6mm's
Kirsite small specification tube/bar, it is to avoid the technique that existing kirsite small specification tube/bar preparation method is present is difficult to control
System and the easily problem of generation defect.
Below by embodiment, technical solution of the present invention is described in further detail.
Specific embodiment
Embodiment 1
External diameter 5.1mm is prepared with hot-swage method, as a example by the Zn-0.1Mg-0.05Sr kirsite tubing of wall thickness 0.65mm, side
Method is as follows：
To external diameter 9mm, the Zn-0.1Mg-0.05Sr kirsites pipe of wall thickness 1.5mm carries out 7 passage hot-swages, obtains outer
Footpath is 5.1mm, and wall thickness is the Zn-0.1Mg-0.05Sr kirsite tubing of 0.65mm, and total deformation is 74.3%, every time heat rotation
Before forging on core bar uniform application by graphite powder and butter according to 1:The lubricant of 8 mass ratio mixing, the feeding of hot-swage
Speed is 3mm/s~12mm/s, and hot-swage technological parameter is shown in Table 1；
The hot-swage technological parameter of the embodiment 1 of table 1
To kirsite pipe after 1st passage, the 2nd passage, the 4th passage, the 5th passage, the 6th passage and the 7th passage hot-swage
Base carries out oil removal treatment and pickling processes；Oil removal treatment is carried out after 3rd passage hot-swage to kirsite pipe, 200 are then carried out
The intermediate annealing process of DEG C insulation 30min, then carry out pickling removal surface scale, then carry out the 4th passage hot-swage.
The tensile strength of Zn-0.1Mg-0.05Sr kirsites tubing manufactured in the present embodiment is 305MPa, and yield strength is
254MPa, elongation is 20%, and tensile strength, yield strength and elongation compared with improving 16%, 21% and respectively before hot-swage
18%.
Embodiment 2
External diameter 5.9mm is prepared with hot-swage method, as a example by the Zn-0.5Fe-0.03Ca kirsite tubing of wall thickness 0.6mm, method
It is as follows：
To external diameter 16mm, the Zn-0.5Fe-0.03Ca kirsites pipe of wall thickness 2.5mm carries out 8 passage hot-swages, obtains outer
Footpath is 5.9mm, and wall thickness is the Zn-0.5Fe-0.03Ca kirsite tubing of 0.6mm, and total deformation is 90.6%, every time heat rotation
Before forging on core bar uniform application by graphite powder and butter according to 1:The lubricant of 6 mass ratio mixing, the feeding of hot-swage
Speed is 8mm/s~16mm/s, and hot-swage technological parameter is shown in Table 2；
The hot-swage technological parameter of the embodiment 2 of table 2
To kirsite pipe after 1st passage, the 3rd passage, the 4th passage, the 6th passage, the 7th passage and the 8th passage hot-swage
Base carries out oil removal treatment and pickling processes；Oil removal treatment is carried out after 2nd passage hot-swage to kirsite pipe, 230 are then carried out
The intermediate annealing process of DEG C insulation 30min, then carry out pickling removal surface scale, then carry out the 3rd passage hot-swage；5th
Oil removal treatment is carried out to kirsite pipe after passage hot-swage, 200 DEG C of intermediate annealing process of insulation 40min are then carried out, connect
Carries out pickling removal surface scale, then carries out the 6th passage hot-swage.
The tensile strength of Zn-0.5Fe-0.03Ca kirsites tubing manufactured in the present embodiment is 280MPa, and yield strength is
206MPa, elongation is 17%, and tensile strength, yield strength and elongation compared with improving 27%, 26% and respectively before hot-swage
13%.
Embodiment 3
External diameter 5.9mm is prepared with hot-swage method, as a example by the Zn-0.1Mg-0.05Sr kirsite tubing of wall thickness 0.6mm, method
It is as follows：
To external diameter 25mm, the Zn-0.1Mg-0.05Sr kirsites pipe of wall thickness 5.5mm carries out 11 passage hot-swages, obtains
External diameter is 5.9mm, and wall thickness is the Zn-0.1Mg-0.05Sr kirsite tubing of 0.6mm, and total deformation is 97.0%, every time heat
Before swaging on core bar uniform application by graphite powder and butter according to 1:The lubricant of 10 mass ratio mixing, hot-swage is sent
Material speed is 10mm/s~20mm/s, and hot-swage technological parameter is shown in Table 3；
The hot-swage technological parameter of the embodiment 3 of table 3
1st passage, the 3rd passage, the 4th passage, the 6th passage, the 7th passage, the 9th passage, the 10th passage and the 11st passage heat
Oil removal treatment and pickling processes are carried out to kirsite pipe after swaging；Kirsite pipe is removed after 2nd passage hot-swage
Oil processing, then carries out 250 DEG C of intermediate annealing process of insulation 30min, then carries out pickling removal surface scale, then carry out
3rd passage hot-swage；Oil removal treatment is carried out after 5th passage hot-swage to kirsite pipe, 230 DEG C of insulation 40min are then carried out
Intermediate annealing process, then carry out pickling removal surface scale, then carry out the 6th passage hot-swage；After 8th passage hot-swage
Oil removal treatment is carried out to kirsite pipe, 200 DEG C of intermediate annealing process of insulation 40min are then carried out, pickling is then carried out and is gone
Except surface scale, then carry out the 9th passage hot-swage.
The tensile strength of Zn-0.1Mg-0.05Sr kirsites tubing manufactured in the present embodiment is 313MPa, and yield strength is
233MPa, elongation is 22%, and tensile strength, yield strength and elongation compared with improving 30%, 33% and respectively before hot-swage
16%.
Embodiment 4
By taking the Zn-0.1Mg-0.05Sr Zinc alloy bars that hot-swage method prepares diameter 4.5mm as an example, method is as follows：
Zn-0.1Mg-0.05Sr kirsites bar stock to diameter 9mm carries out 6 passage hot-swages, obtains a diameter of 4.5mm's
Zn-0.1Mg-0.05Sr Zinc alloy bars, total deformation is 75.0%, and the feeding speed of hot-swage is 3mm/s~12mm/s, heat
Technological parameter of swaging is shown in Table 4；
The hot-swage technological parameter of the embodiment 4 of table 4
Machine is carried out to kirsite bar stock after 1st passage, the 2nd passage, the 4th passage, the 5th passage and the 6th passage hot-swage
Tool is polished；150 DEG C of intermediate annealing process of insulation 60min are carried out after 3rd passage hot-swage to kirsite bar stock, is then beaten
Grind off except surface scale, then carry out the 4th passage hot-swage.
The tensile strength of Zn-0.1Mg-0.05Sr Zinc alloy bars manufactured in the present embodiment is 302MPa, and yield strength is
243MPa, elongation is 21%, and tensile strength, yield strength and elongation compared with improving 21%, 23% and respectively before hot-swage
10%.
Embodiment 5
By taking the Zn-0.1Mg-0.05Sr Zinc alloy bars that hot-swage method prepares diameter 5.4mm as an example, method is as follows：
Zn-0.1Mg-0.05Sr kirsites bar stock to diameter 18mm carries out 8 passage hot-swages, obtains a diameter of 5.4mm
Zn-0.1Mg-0.05Sr Zinc alloy bars, total deformation is 91.0%, and the feeding speed of hot-swage is 8mm/s~16mm/s,
Hot-swage technological parameter is shown in Table 5；
The hot-swage technological parameter of the embodiment 5 of table 5
To kirsite rod after 1st passage, the 3rd passage, the 4th passage, the 6th passage, the 7th passage and the 8th passage hot-swage
Base carries out mechanical grinding；250 DEG C of intermediate annealing process of insulation 30min are carried out after 2nd passage hot-swage to kirsite bar stock, so
After carry out polishing removal surface scale, then carry out the 3rd passage hot-swage；Kirsite bar stock is carried out after 5th passage hot-swage
200 DEG C of intermediate annealing process of insulation 40min, then carry out polishing removal surface scale, then carry out the 6th passage hot-swage.
The tensile strength of Zn-0.1Mg-0.05Sr Zinc alloy bars manufactured in the present embodiment is 314MPa, and yield strength is
252MPa, elongation is 21%, and tensile strength, yield strength and elongation compared with improving 29%, 33% and respectively before hot-swage
18%.
Embodiment 6
By taking the Zn-0.5Fe-0.03Ca Zinc alloy bars that hot-swage method prepares diameter 5.8mm as an example, method is as follows：
Zn-0.5Fe-0.03Ca kirsites bar stock to diameter 24.5mm carries out 10 passage hot-swages, obtains a diameter of
The Zn-0.5Fe-0.03Ca Zinc alloy bars of 5.8mm, total deformation is 94.4%, the feeding speed of hot-swage for 8mm/s~
20mm/s hot-swage technological parameters are shown in Table 6；
The hot-swage technological parameter of the embodiment 6 of table 6
It is right after 1st passage, the 3rd passage, the 4th passage, the 6th passage, the 7th passage, the 8th passage and the 10th passage hot-swage
Kirsite bar stock carries out mechanical grinding；Move back the centre that 300 DEG C of insulation 30min are carried out to kirsite bar stock after 2nd passage hot-swage
Fire treatment, then carries out polishing removal surface scale, then carry out the 3rd passage hot-swage；To kirsite after 5th passage hot-swage
Bar stock carries out 250 DEG C of intermediate annealing process of insulation 40min, then carries out polishing removal surface scale, then carry out the 6th passage
Hot-swage；150 DEG C of intermediate annealing process of insulation 30min are carried out after 9th passage hot-swage to kirsite bar stock, is then beaten
Grind off except surface scale, then carry out the 10th passage hot-swage.
The tensile strength of Zn-0.5Fe-0.03Ca Zinc alloy bars manufactured in the present embodiment is 296MPa, and yield strength is
237MPa, elongation is 17%, and tensile strength, yield strength and elongation compared with improving 26%, 30% and respectively before hot-swage
21%.
The above, is only presently preferred embodiments of the present invention, and any limitation is not done to the present invention, every according to invention skill
Any simple modification, change and equivalent structure change that art is substantially made to above example, still fall within the technology of the present invention
In the protection domain of scheme.
Claims (9)
1. a kind of hot-swage method of kirsite small specification tube or bar, it is characterised in that the method includes：By kirsite pipe
Base or kirsite bar stock carry out multi-pass hot-swage under conditions of being 150 DEG C~250 DEG C in temperature, external diameter are obtained accordingly little
It is not more than the Zinc alloy bar of 6mm in the kirsite tubing or diameter of 6mm；To kirsite pipe or kirsite during hot-swage
Bar stock carries out intermediate annealing process, controls the total deformation before first time intermediate annealing process for 50%~70%, it is adjacent twice
Total deformation between intermediate annealing process is 50%~70%；The pass deformation of the hot-swage is 10%~40%, always
Deflection is not less than 70%；The external diameter of the kirsite pipe and the diameter of kirsite bar stock are no more than 25mm.
2. the hot-swage method of a kind of kirsite small specification tube according to claim 1 or bar, it is characterised in that in
Between oil removal treatment is carried out to kirsite pipe after a time hot-swage before annealing, to kirsite after remaining passage hot-swage
Pipe carries out oil removal treatment and pickling processes；In directly being carried out to kirsite bar stock after a time hot-swage before intermediate annealing process
Between make annealing treatment, mechanical grinding is carried out to kirsite bar stock after remaining passage hot-swage.
3. the hot-swage method of a kind of kirsite small specification tube according to claim 1 or bar, it is characterised in that institute
Pickling removal surface scale is carried out to the kirsite pipe through intermediate annealing process after stating intermediate annealing process, the centre is moved back
Polishing removal surface scale is carried out after fire treatment to the kirsite bar stock through intermediate annealing process.
4. the hot-swage method of a kind of kirsite small specification tube according to claim 1 or bar, it is characterised in that institute
It is 150 DEG C~300 DEG C to state the temperature of intermediate annealing process, and soaking time is 30min~60min.
5. the hot-swage method of a kind of kirsite small specification tube according to claim 1 or bar, it is characterised in that when
During a diameter of 10mm~25mm of the external diameter of the kirsite pipe or kirsite bar stock, the pass deformation of hot-swage is 10%
~40%, and pass deformation gradually reduces, the kirsite rod after the external diameter of kirsite pipe after hot-swage or hot-swage
When the diameter of base is less than 10mm, it is 10%~30% to control the pass deformation of hot-swage, and pass deformation is gradually reduced.
6. the hot-swage method of a kind of kirsite small specification tube according to claim 1 or bar, it is characterised in that when
When the external diameter of the kirsite pipe or the diameter of kirsite bar stock are less than 10mm, the pass deformation of hot-swage for 10%~
30%, and pass deformation gradually reduces.
7. the hot-swage method of a kind of kirsite small specification tube according to claim 1 or bar, it is characterised in that heat
Control to swage the head speed of mainshaft in rotary swaging process for 200r/min~300r/min.
8. the hot-swage method of a kind of kirsite small specification tube according to claim 1 or bar, it is characterised in that institute
The feeding speed for stating hot-swage is 3mm/s~20mm/s.
9. the hot-swage method of a kind of kirsite small specification tube according to claim 1 or bar, it is characterised in that institute
Before stating kirsite pipe hot-swage, on core bar uniform application by graphite powder and butter according to 1:The mass ratio of (6~10) is mixed
The lubricant of conjunction.
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| CN106756680B (en) * | 2016-11-23 | 2018-09-07 | 西北有色金属研究院 | A kind of processing method of high-strength magnesium alloy small-sized bar |
| CN106862298B (en) * | 2017-02-15 | 2018-08-24 | 西安爱德万思医疗科技有限公司 | A kind of preparation method of the degradable kirsite capillary silk material of medical bio |
| CN108300952B (en) * | 2017-08-21 | 2019-12-10 | 广东省材料与加工研究所 | preparation method of medical magnesium alloy stent |
| CN108262368B (en) * | 2017-08-21 | 2020-04-10 | 广东省材料与加工研究所 | Preparation method of high-performance medical magnesium alloy thin-wall pipe |
| CN111375713A (en) * | 2018-12-27 | 2020-07-07 | 南京理工大学 | Rotary swaging preparation method of high-strength aluminum conductor |
| CN110743933B (en) * | 2019-10-29 | 2020-11-27 | 西北有色金属研究院 | Thermal processing method of medical cobalt-based alloy small and micro pipe |
| CN111687237A (en) * | 2020-06-18 | 2020-09-22 | 成都先进金属材料产业技术研究院有限公司 | Cold rolling method of thick-wall capillary titanium alloy seamless pipe |
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